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Single 3d transition metal atoms on multi-layer graphene systems: electronic configurations, bonding mechanisms and role of the substrate
- 1.0432547 - FZÚ 2015 RIV DE eng J - Journal Article
Sessi, V. - Stepanow, S. - Rudenko, A.N. - Krotzky, S. - Kern, K. - Hiebel, F. - Mallet, P. - Veuillen, J.-Y. - Šipr, Ondřej - Honolka, Jan - Brookes, N.B.
Single 3d transition metal atoms on multi-layer graphene systems: electronic configurations, bonding mechanisms and role of the substrate.
New Journal of Physics. Roč. 16, Jun (2014), 1-11. ISSN 1367-2630. E-ISSN 1367-2630
R&D Projects: GA ČR(CZ) GAP108/11/0853
Institutional support: RVO:68378271
Keywords : graphene * magnetic adsorbates * x-ray absorption spectroscopy * surface magnetism
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.558, year: 2014
The electronic configurations of Fe, Co, Ni and Cu adatoms on graphene and graphite have been studied by x-ray magnetic circular dichroism and charge transfer multiplet theory. A delicate interplay between long-range interactions and local chemical bonding is found to influence the adatom equilibrium distance and magnetic moment. The results for Fe and Co are consistent with purely physisorbed species having, however, different 3d-shell occupations on graphene and graphite (dn+1 and dn, respectively). On the other hand, for the late 3d metals Ni and Cu a trend towards chemisorption is found, which strongly quenches the magnetic moment on both substrates.
Permanent Link: http://hdl.handle.net/11104/0236917
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